Fig. 1: Overview of the study design.
From: Physiologically-relevant light exposure and light behaviour in Switzerland and Malaysia

A Shows the study design and measurements included for both research sites. B Both research locations (Basel, Switzerland; Kuala Lumpur, Malaysia) shown on a world map. C Individual recording periods per site and participant including implicit missing data in grey. Note that participant ID 06 is missing in the Malaysian dataset due to a lost light logger. D Photoperiod duration in Malaysia (blue), and Switzerland (yellow). E Grand averages of light exposure of illuminance (melanopic EDI) for Singapore (blue) and Switzerland (yellow). Abbreviations: LEBA Light exposure behaviour assessment, mel EDI melanopic equivalent daylight illuminance, PSQI Pittsburgh Sleep Quality Index.